CN102905579B - The backrest counter-force mechanism of chair and be provided with the chair of this mechanism - Google Patents
The backrest counter-force mechanism of chair and be provided with the chair of this mechanism Download PDFInfo
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- CN102905579B CN102905579B CN201080066974.XA CN201080066974A CN102905579B CN 102905579 B CN102905579 B CN 102905579B CN 201080066974 A CN201080066974 A CN 201080066974A CN 102905579 B CN102905579 B CN 102905579B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 129
- 238000006243 chemical reaction Methods 0.000 claims abstract description 92
- 230000009471 action Effects 0.000 claims abstract description 45
- 230000037396 body weight Effects 0.000 claims abstract description 35
- 210000003141 lower extremity Anatomy 0.000 claims abstract description 11
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000035807 sensation Effects 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000007665 sagging Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
- A47C1/03238—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
- A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C1/00—Chairs adapted for special purposes
- A47C1/02—Reclining or easy chairs
- A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
- A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
- A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
Landscapes
- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Chairs Characterized By Structure (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
The backrest counter-force mechanism of the chair of the present invention can make the tailored appearance under seat smooth, and underchassis space can be made to become big, and then available more longer than conventional mechanism of the same race reaction spring, the backrest counter-force mechanism of this chair has: the substructure member (2) supported by lower limb (1); Back support component (4), its via rotating shaft (7) and substructure member (2) connect to can hypsokinesis, and support backrest (3); The seat supports component (6) of seat (5) is installed; And reaction spring (16), it applies the elastic force making body weight corresponding counter-force mechanism and back support component (4) return to original position, described body weight corresponding counter-force mechanism makes seat supports component (6) carry out linkage action towards lifting direction when making back support component (4) hypsokinesis, and described reaction spring (16) is laterally configured between back support component (4) and seat supports component (6).
Description
Technical field
The present invention relates to and make the backrest of hypsokinesis producing the backrest counter-force mechanism of the chair of power (be called in this specification locking counter-force) backrest pushed home to be put and the chair being provided with this mechanism. More specifically, the present invention relates to and with the backrest counter-force mechanism of the chair of counter-force mechanism and the chair being provided with this mechanism, this counter-force mechanism make use of the body weight corresponding counter-force mechanism of power and spring that produce to be pushed back by backrest by making seat rise with the hypsokinesis of the backrest of chair linkage.
Background technology
In the past, as to the backrest of chair of hypsokinesis producing the backrest counter-force mechanism of power backrest pushed home to be put, propose, not merely with the counter-force mechanism employing spring, also to utilize the body weight corresponding counter-force mechanism (patent documentation 1,2) producing the power to be pushed back by backrest by making seat rise with the hypsokinesis of backrest linkage.
As shown in figure 19, the body weight corresponding counter-force mechanism of patent documentation 1 possesses the base 102 supported by lower limb 101, the back of the body pole 104 being provided with backrest 103, the seat supports component 106 being provided with seat 105, back of the body pole 104 can be linked to hypsokinesis the prolongation 110 of the axle 107 of base 102, the connecting rod 108 front of seat supports component 106 and base 102 linked and the back of the body pole 104 that utilizes the rear of axle 109 and seat supports component 106 to link, and is configured to the utilization when backrest 103 hypsokinesis and carries on the back the prolongation 110 of pole 104 and lift seat 105 with the connecting rod 108 erected.
In addition, although the body weight corresponding counter-force mechanism basic conception of patent documentation 2 is identical with patent documentation 1, but produce big counteracting force in order to eliminate in the starting stage of backrest hypsokinesis quickly, and the shortcoming of the invention of the patent documentation 1 that counteracting force diminishes later, have employed and utilize elongated hole 200 and axle 201 to substitute connecting rod 108, the front of seat supports component 202 is made to link with the hypsokinesis of back support component 203, the structure (with reference to Figure 20) lifted to oblique back upper place.
At this, in the backrest counter-force mechanism of patent documentation 1 and 2, and body weight corresponding counter-force mechanism and reaction spring 111,204 be all vertically configured to be sandwiched between back support component and the substructure member of rotating shaft (becoming the axle of the fulcrum of body weight corresponding counter-force mechanism) the more posteriorly side than the center of rotation becoming back support component, and be configured to directly longitudinally accepting the swing of back support component and producing counteracting force.
Prior art literature
Patent documentation
Patent documentation 1: International Publication WO00/74531
Patent documentation 2: Japanese Patent Laid-Open 2008-212622
Summary of the invention
Invent technical problem to be solved
; in the backrest counter-force mechanism of patent documentation 1 and 2; vertically it is configured to be sandwiched between back support component and substructure member in the more posteriorly side of the rotating shaft than back support component and at the contiguous spring producing counteracting force of rotating shaft; so reaction spring occupies to longitudinally projecting position under being present, thus the problem that there is infringement outward appearance. Additionally, in the situation covering reaction spring with lid etc., be also attended by lid itself and maximize and become massive outward appearance, to the impression that people is heavy, and the problem that underchassis space change is big cannot be made. In addition, the support structure thing of backrest or reaction spring mechanism is made to concentrate on compared with the underchassis space in the rotating shaft of back support component more front originally with regard to narrow and that spatially enough and to spare is few rear space, what can make short transverse bloats beyond more than necessity, and violate thin-long, the underchassis space comparing the front having enough and to spare cannot be effectively utilized simultaneously, compare waste.
Additionally, in order to reaction spring being longitudinally configured near the rotating shaft of back support component, it has to making the length of reaction spring shorten, so the spring that the expensive such brute force of die spring is firm must be used, cost uprises. Additionally, because spring is firm, institute is so that hardness when backrest carries out lock out action becomes dullness. Additionally, because having to the vicinity that short reaction spring is configured at rotating shaft, even if so wanting the angle changing spring, this angular adjustment is also almost without impact. And, because from most first arrival final weight equally towards the compression direction effect of reaction spring, even if so also giving user with the sensation of spring effect near stroke end so that it is feel the bounce-back to be pushed back. Due to these problems, it is difficult to regulate locking hardness.
Additionally, because short spring can only be adopted, so as reaction spring, it is difficult to adopt the gas spring with locking mechanism of difficult miniaturization in mechanism.
Therefore, it is an object of the invention to provide and tailored appearance under seat can be made smooth, and underchassis space can be made to become the backrest counter-force mechanism of big chair and the chair of this mechanism is installed. It is further an object that provide the backrest counter-force mechanism of the chair of available more longer than conventional mechanism of the same race reaction spring and be provided with the chair of this mechanism.
Solve the technical scheme that technical problem adopts
In order to reach this purpose, the backrest counter-force mechanism of the chair of the present invention has: the substructure member supported by lower limb, back support component, its via backrest rotating shaft and substructure member connect to can hypsokinesis, and support backrest, the seat supports component of seat is installed, and reaction spring, it applies the elastic force making body weight corresponding counter-force mechanism and back support component return to original position, above-mentioned body weight corresponding counter-force mechanism makes seat supports component carry out linkage action towards lifting direction when back support component hypsokinesis, the backrest counter-force mechanism of this chair is formed as laterally being configured between back support component and substructure member by above-mentioned reaction spring, the front of seat supports component is connected to and can rotate freely relative to substructure member via connecting rod by described body weight corresponding counter-force mechanism, the rear of seat supports component is connected to the lever connecting rod portion more extended to oblique front upper place than backrest rotating shaft simultaneously and rotate freely, the connecting rod that the front of seat supports component is supported tilts forward than lever connecting rod portion, utilize the hypsokinesis action centered by backrest rotating shaft, the lever connecting rod portion making the front of back support component rotates, thus to oblique back upper place to the rear lifting seat supports component, and the connecting rod that the front of one side pull-up and seat supports component links, one side lifts the front of seat supports component.
At this, spring means all components possessing springlike resilience, for instance, the spring of narrow sense as such in collapse coil spring is naturally passable, also comprises gas spring or elastomer. Although additionally, reaction spring is configured at the front more sub than backrest rotating shaft more arm-chair preferably, but being not particularly limited in this. Also being configured in more more rearward than backrest rotating shaft, one end is rotatably installed on back support component, and the other end is rotatably installed on substructure member, and changes it together with the action of back support component. In addition, reaction spring is laterally configured between back support component and substructure member, it is not defined to proper transverse direction, mean to get rid of the degree of longitudinally configuration in a broad sense, more it is appropriate that so that purpose succinct smooth under seat configures, according to circumstances, the situation that the shape of back support component configures sideling also it is included along.
In addition, in the present invention, it is preferable that, as this reaction spring, using collapse coil spring, and possess reaction spring apparatus for adjusting position, reaction spring axle is supported into and can rotate freely in the end of either one that this collapse coil spring is installed on back support component or seat supports component by it, give the displacement of the length direction composition of reaction spring simultaneously, regulate the initial compression amount of reaction spring.
Additionally, it is preferable that, the backrest counter-force mechanism of the present invention has: substructure member, and this substructure member is supported by lower limb, back support component, this back support component connects to energy hypsokinesis via backrest rotating shaft and substructure member, and supports backrest, seat supports component, this seat supports component is provided with seat, and reaction spring, this reaction spring applies the elastic force making body weight corresponding counter-force mechanism and back support component return to original position, described body weight corresponding counter-force mechanism makes seat supports component carry out linkage action towards lifting direction when making back support component hypsokinesis, reaction spring is laterally configured between back support component and substructure member, in addition, backrest counter-force mechanism possesses the locking mechanism engaged with each other between substructure member and back support component, this locking mechanism is made up of the fixing component being installed on substructure member side and the movable link being installed on back support member side, the stopper element possessing rotation and two ends and fixing bar-crossing centered by stopper element rotating shaft in movable link side and the drive division making this stopper element rotate, in the direction of rotation of back support component, hole or the recess that the multistage both ends for stopper element embed is possessed in fixing member side.
In addition, it is preferable that, locking mechanism possesses first spring in the stopper element hole to fixing member side or recess force, it is located between stopper element and drive division and transmits second spring of action of drive division to stopper element, when stopper element cannot follow lock out action or the latch-release action of drive division, utilize the flexible separation drive division of the second spring and the linkage action of above-mentioned stopper element, absorb the displacement of drive division simultaneously, and store as elastic force, when frictional force between that act on stopper element and fixing component reduces, the elastic force stored by the second spring is utilized to make stopper element rotate.
Additionally, the present invention is provided with the chair of above-mentioned backrest counter-force mechanism.
Invention effect
The backrest counter-force mechanism of the chair according to the present invention, by laterally configuring reaction spring, the length of spring is not easily susceptible to restriction, and spring can be made elongated.Therefore, in the situation obtaining identical moment, the power of spring can diminish, and can not use the such brute spring of die spring, so cost can be reduced. Additionally, because long spring can be used, even so the gas spring being difficult to miniaturization in mechanism also can use. Use gas spring, locking mechanism can be had concurrently, although be and with the structure of body weight corresponding counter-force mechanism, but can fix backrest in arbitrary angle.
In addition, the backrest counter-force mechanism of the chair according to the present invention, if seated person leans against on backrest, then one side compression one backrest of reaction spring and the hypsokinesis centered by backrest rotating shaft of back support component, simultaneously as utilize the lever connecting rod portion of the front end of back support component and the connecting rod of front side to be intended to lift seat supports component, therefore, the body weight acting on the seated person of seat is transformed into the power pushed back by backrest, and as reaction force acts in back support component. Thus, the people of heavier-weight to make backrest hypsokinesis, it is necessary to energetically, and the people that body weight is lighter to make backrest hypsokinesis, little power. That is, as the locking counteracting force relative to the power making backrest hypsokinesis, the power of size corresponding to the body weight of seated person can be obtained. On the other hand, when seated person to make to erect above the waist, simultaneously, reaction spring extends the effect with the locking counteracting force caused by body weight, and back support component is forwards erected. The connecting rod being additionally, since front side tilts forward than the lever connecting rod portion of rear side, accordingly, it is capable to make the front of seat surface rise than on rear, thus being not likely to produce the dislocation with backrest.
In addition, in the backrest counter-force mechanism of the present invention, if reaction spring being laterally configured at more closer to the front than backrest rotating shaft, then can effectively utilize the space more closer to the front than backrest rotating shaft becoming the space that is wasted, and can eliminate at reaction spring produced by space below prominent, make overall succinct smooth slim design under seat so can be formed.
In addition, in the backrest counter-force mechanism of the present invention, it is more more rearward than backrest rotating shaft by reaction spring is configured at, its one end is rotatably installed on back support component, and the other end is rotatably installed on substructure member, thereby, it is changed together with action with back support component, spring so can be made to compress swimmingly, it will not be made to bend, the characteristic of spring can be maximally utilised. Because spring performance can be maximally utilised, even so weak spring (cheap spring) also can use.
In addition, the backrest of present invention counter-force mechanism uses collapse coil spring as reaction spring, and possess the reaction spring apparatus for adjusting position of the initial compression amount regulating this spring, so by the initial compression amount regulating reaction spring, scalable utilizes the size of the counteracting force of the counter-force mechanism of spring.
In addition, the backrest counter-force mechanism of the present invention possesses the locking mechanism being made up of the fixing component being installed on substructure member side and the movable link being installed on back support member side between substructure member and back support component, on the other hand, the stopper element possessing rotation and two ends and fixing bar-crossing centered by stopper element rotating shaft in movable link side and the drive division making this stopper element rotate, in the direction of rotation of back support component, hole or the recess that the multistage both ends for stopper element embed is possessed in fixing member side, so can with the fixing back support component of the default hypsokinesis angle in the hypsokinesis action way of backrest. thus, can further improve the ease of use of chair.
And, stopper element adopts to utilize and rotates the structure making its two ends simultaneously engage with fixing component and to realize locking, so may make up the locking mechanism that action is bad less, intensity is strong.Because can complete the locking at two ends with the rotation of a stopper element, package count is few, can form simple structure, and owing to fixing at 2, so the lower thickness of stopper element also can be made. Additionally, because stopper element is installed in movable link side, so space can be made to diminish. The situation of or recess porose in movable link side, it is necessary at the multiple holes embedded by longitudinally disposed stopper element or recess, result can make movable link become big, so needing big space.
In addition, locking mechanism possesses always the first spring by the stopper element hole to fixing member side or recess force, it is located between stopper element and drive division and transmits second spring of action of drive division to stopper element, because being configured to when stopper element cannot follow the action of drive division, utilize the flexible linkage action separating drive division and stopper element of the second spring, absorb the displacement of drive division simultaneously, and store as elastic force, when frictional force between that act on stopper element and fixing component alleviates, utilize the elastic force being stored in the second spring, stopper element is made to rotate. as long as so certain power of direction of rotation does not act on back support component, no matter the running-active status of drive division how, all keeps lock-out state or latch-release state.
Accompanying drawing explanation
Fig. 1 indicates that the diagrammatic side view of the first embodiment of the chair of the counter-force mechanism adopting the present invention.
Fig. 2 is by the schematic diagram of the counter-force mechanism part enlarged representation of this chair.
Fig. 3 indicates that the diagrammatic side view of the second embodiment of the chair of the counter-force mechanism adopting the present invention.
Fig. 4 is the schematic diagram of the counter-force mechanism part enlarged representation of the chair by the second embodiment.
Fig. 5 indicates that the diagrammatic side view of the 3rd embodiment of the chair of the counter-force mechanism adopting the present invention.
Fig. 6 is the schematic diagram of the counter-force mechanism part enlarged representation of the chair by the 3rd embodiment.
Fig. 7 indicates that the diagrammatic side view of the 4th embodiment of the chair of the counter-force mechanism adopting the present invention.
Fig. 8 is the schematic diagram of the counter-force mechanism part enlarged representation of the chair by the 4th embodiment.
Fig. 9 indicates that the seat of the chair being provided with locking mechanism bears the central sectional side elevation of component and an embodiment of the relation of back support component.
Figure 10 indicates that the seat being provided with locking mechanism of this chair bears the top view of component and back support component.
Figure 11 is locked out the upward view of mechanism.
Figure 12 indicates that the central sectional side elevation of the movable link of locking mechanism.
Figure 13 is in the upward view of the locking mechanism of latch-release state.
Figure 14 is in the upward view of the locking mechanism of lock-out state.
Figure 15 indicates that the top view of the fixing component of locking mechanism.
Figure 16 is the side view of this fixing component.
Figure 17 indicates that the central sectional side elevation of other embodiment of locking mechanism.
Figure 18 indicates that the top view of the major part of this locking mechanism.
Figure 19 indicates that the schematic diagram of an example of the chair adopting conventional body weight corresponding counter-force mechanism.
Figure 20 indicates that the schematic diagram of other example of the chair adopting conventional body weight corresponding counter-force mechanism.
Detailed description of the invention
Hereinafter, the embodiment according to drawing describes the structure of the present invention in detail.
Fig. 1��Fig. 2 represents the first embodiment of the backrest counter-force mechanism of the chair of the present invention. This backrest counter-force mechanism having used makes seat supports component 6 towards lifting direction the body weight corresponding counter-force mechanism carrying out linking and the counter-force mechanism utilizing the reaction spring 16 bearing the elastic force making back support component 4 return to original position when back support component 4 hypsokinesis making chair, reaction spring 16 is laterally configured at the position in the backrest rotating shaft 7 more front than back support component 4, and is configured between back support component 4 and seat supports component 6.
In addition, chair has lower limb 1, the substructure member 2 supported by lower limb 1, the back support component 4 of backrest 3 is installed and the seat supports component 6 of seat 5 is installed, and constitute body weight corresponding counter-force mechanism, it utilizes backrest rotating shaft 7 to be connected to by back support component 4 can relative to substructure member 2 hypsokinesis, on the other hand, with connecting pin 8, the front of seat supports component 6 is connected to and can rotate freely relative to the bracket 58 of substructure member 2 via connecting rod 10 by 59, with connecting pin 9 rear of seat supports component 6 connected to the lever connecting rod portion 11 more extended to oblique front upper place than backrest rotating shaft 7 simultaneously and rotate freely, and utilize the back support component 4 hypsokinesis action centered by backrest rotating shaft 7, the lever connecting rod portion 11 making back support component 4 front rotates, thus to oblique back upper place to the rear lifting seat supports component 6, and the connecting rod 10 that the front of one side pull-up and seat supports component 6 links, one side lifts the front of seat supports component 6.
Back support component 4 works as lever, while supporting backrest 3, seat supports component 6 is lifted for fulcrum with backrest rotating shaft 7, double; two forked by being branched off in the more front of backrest rotating shaft 7, and being integrally formed a side be reaction spring receiving portion 12, the opposing party is lever connecting rod portion 11. Namely, back support component is respectively in backrest rotating shaft 7 more front and be provided above lever connecting rod portion 11, in rotating shaft more front and the reaction spring receiving portion 12 being arranged below end via connecting pin 13 reaction of bearing spring 16, and be arranged to lift seat supports component 6 when seated person leans against backrest 3, make reaction spring 16 compress, to produce counteracting force simultaneously. Additionally, back support component 4 has a banking pin 14 run through by the rotationally constrained elongated hole 15 being arranged at substructure member 2, and only can arrange in the way of fixed range swing stroke end being constrained to back support component.
Substructure member 2 is to support back support component 4 and seat supports component 6 component being loaded into lower limb 1 rotationally, as long as possessing the position and rigidity that at least support back support component 4 and seat supports component 6, is not defined to specific structure or shape etc. Situation in present embodiment, substructure member 2 links the front end of beam with front end-plate 20 and transverse slat 61, and it being configured to be formed with the frame shape in the vacancy 62 that locking mechanism 31 or locking mechanism 31 are configured at central authorities with reaction spring 16, above-mentioned beam is configured at the upper end with the pillar by embedding lower limb 1 in the way of forwards prominent and the left and right of the floor installation seat 60 of the bearing portion of fixing taper barrel.
At this, as reaction spring 16, use collapse coil spring in the present embodiment. As in figure 2 it is shown, the reaction spring 16 being made up of collapse coil spring is via utilizing guide shaft 19 to be arranged to laterally to be configured between connecting pin 13 and the front end-plate 20 of substructure member 2 front end of reaction spring receiving portion 12 of back support component 4 front end close to a pair spring base 17,18 separated at a direction of principal axis. Owing to reaction spring 16 landscape configuration is between the connecting pin 13 and the front end-plate 20 of substructure member 2 of the reaction spring receiving portion 12 of back support component 4, make spring elongated, brute spring as die spring make the distance from fulcrum to application point longer, so can not be used. The spring base 17 of a side is provided for the recess that the sphere of set screw 21 front end embeds, the spring base 18 of the opposing party is provided with the semicircular hook engaged with connecting pin 13. Additionally, the front end-plate 20 of substructure member 2 possesses front end forms the set screw 21 of sphere, by changing the set screw 21 overhang from front end-plate 20, the initial compression amount of scalable reaction spring 16, thus the intensity of counteracting force produced by scalable.Additionally, the sphere of set screw 21 front end constitutes spheric seating between the recess being arranged at the spring base 17 of a side of reaction spring 16. Therefore, can simultaneously utilizing the discrepancy of set screw 21 to regulate the inclination of reaction spring 16, one side changes the initial length of reaction spring 16, thus adjustable counteraction power. By regulating the setting angle of spring, also can reduce the bounce in stroke end, the sensation (sensation that counteracting force continues to increase remains last) of spring can be experienced all the time.
In addition, although in the present embodiment, angle for scalable reaction spring 16, front end-plate 20 at substructure member 2 utilizes bolt 24 and elongated hole 25 to be mounted to move along front end-plate 20 towards above-below direction by the adjustable plate 22 with the screw hole 23 that set screw 21 is screwed into, but when installing reaction spring 16, the angle of reaction spring 16 is fixed, such as also available welding etc., by affixed to front end-plate 20 and adjustable plate 22, or makes front end-plate 20 itself possess set screw 21. Set screw 21 is prominent from adjustable plate 22 to the spring base 17 of reaction spring 16.
According to the backrest counter-force mechanism constituted as shown above, if seated person leans against on backrest 3, then one side compression 16 1 backrests 3 of reaction spring and back support component 4 hypsokinesis as shown in dummy line centered by backrest rotating shaft 7. Simultaneously as utilize the lever connecting rod portion 11 of back support component 4 front end and connecting rod 10 to be intended to lift seat supports component 6, therefore, the body weight acting on the seated person of seat 5 is transformed into the power pushed back by backrest 3, and as reaction force acts in back support component 4. Thus, the people of heavier-weight to make backrest hypsokinesis, it is necessary to energetically, and the people that body weight is lighter to make backrest hypsokinesis, little power. That is, as the locking counteracting force relative to the power making backrest hypsokinesis, the power of size corresponding to the body weight of seated person can be obtained. On the other hand, when seated person to make to erect above the waist, simultaneously, reaction spring 16 extends the effect with the locking counteracting force caused by body weight, and back support component 4 is forwards erected.
Constitute according to this, because along with the angle of inclination of back support component 4 increases, the angle of spring flattens gradually, and produced locking counteracting force moves closer to definite value. On the contrary, act on the body weight of the seated person of backrest because the angle of backrest flattens gradually and increases. That is, make the angle of spring flatten gradually because of tilting backwards along with backrest, so the decrement of the reaction spring applied by back support component tapers into, the power that backrest pushed home is put relatively is died down produced by reaction spring. Thus, the spring load characteristic of the bounce-back sense that namely sensation that can obtain not having spring to work near stroke end is not pushed back. That is, can obtain it is generally acknowledged the locking counteracting force of the sense without spring of feeling of high class.
Although reaction spring 16 is configured at more closer to the front preferably than the backrest rotating shaft 7 of back support component 4, but it is not particularly limited so, also it is configured in more more rearward than backrest rotating shaft 7, one end is rotatably mounted in back support component 4, the other end is rotatably mounted in substructure member 2, and changes it together with the action of back support component 4. Such as, also can be set as shown in Figures 3 and 4, connecting pin 13 is arranged at back support component 4, possesses set screw 21 in the rear end of substructure member 2 simultaneously, the recess of the spring base 17 of one side embeds the sphere of set screw 21 front end being supported into by axle rotate freely, the semicircular hook simultaneously making the spring base 18 of the opposing party engages with connecting pin 13, and is arranged to utilize the hypsokinesis action compresses reaction spring 16 of back support component 4, produces counteracting force.Additionally, below, in this specification and drawing, the symbol that the component mark identical with the embodiment shown in Fig. 1 and Fig. 2 is identical, and omit its repeat specification.
In the case, owing to reaction spring 16 is substantially hidden in back support component 4, and it is configured between back support component 4 and substructure member 2, therefore, in the mode of back support component 4, need not to longitudinally projecting reaction spring 16 or the large-scale lid covering reaction spring 16, the mechanism of substructure member under seat and the periphery that comprises back support component forms smooth shape, tailored appearance. And, because the length of reaction spring 16 is not affected by restriction, spring can be made elongated, make the distance from fulcrum to application point longer, so brute spring as die spring can not be used.
Additionally, as reaction spring 16, be not particularly limited as above-mentioned collapse coil spring, also available other elastic component of display such as gas spring or elastomer. Such as also can as shown in Figures 5 and 6, reaction spring 16 adopts the gas spring with locking mechanism, and is laterally configured between the connecting pin 13 of the reaction spring receiving portion 12 of back support component 4 front end and the connecting pin 27 of substructure member 2 front end. The ring 26 of cylinder base is rotatably installed on the reaction spring receiving portion 12 of back support component 4 by the gas spring 16 with locking mechanism with connecting pin 13, on the other hand, utilize nut that bar front end is fixed on the bracket 29 utilizing connecting pin 27 to be rotatably installed on substructure member 2, thereby, it is mounted to changeable angle. Bracket 29 possesses the bar 30 utilizing operation line 28 to be remotely controlled operation, and is arranged to utilize the valve of the locking mechanism of this bar 30 operating gas spring. In the case, owing to reaction spring 16 itself has stepless locking mechanism, so can the action of arbitrarily angled fixing back support component 4 in the hypsokinesis action way of back support component 4.
In addition, also the more rear that can will be configured at backrest rotating shaft 7 as the gas spring with locking mechanism of reaction spring 16, one end is rotatably mounted in back support component 4, and the other end is rotatably mounted in substructure member 2, and changes it together with the action of back support component 4. Such as, also can be as shown in Figures 7 and 8, with connecting pin 13, the ring 26 of cylinder base is rotatably installed on the rear end of substructure member 2, on the other hand, bar front end is fixed on the bracket 29 utilizing connecting pin 27 to be rotatably installed on back support component 4, and thereby, reaction spring 16 is substantially hidden in back support component 4, and it is configured between back support component 4 and substructure member 2, change the inclination of gas spring 16 together with the action with back support component 4.
Additionally, when by collapse coil spring or elastomer etc. be used as reaction spring 16 backrest counter-force mechanism, possess make back support component 4 engaging in substructure member 2 locking mechanism 31 preferably. Such as, also can configure the locking mechanism 31 as shown in Fig. 9��Figure 16 between substructure member 2 and back support component 4, make backrest 3 can fix in reclined position. This locking mechanism 31 is made up of the fixing component 33 being installed on substructure member 2 side and the movable link 32 being installed on back support component 4 side, possess in movable link 32 side and rotate centered by stopper element rotating shaft 38 and stopper element 37 that two ends 37a and fixing component 33 intersect and the drive division 51 that makes stopper element 37 rotate, and in fixing component 33 side, possess the multistage both ends 37a for stopper element 37 hole 34 embedded or recess turning to of back support component 4 respectively in two side.Additionally, the stopper element 37 of movable link 32 or drive division 51 and operation line 48 etc. are by the top braces of movable link.
Fixing component 33 is made up of the framework 71 of the flute profile of lower opening, the side of sidewall portion 70 of the pair of right and left sagging towards vertical becomes to be disposed radially around three holes 34 respectively, possesses in the outside in two side portion 70 prominent laterally and across the flange part 35 on substructure member 2 simultaneously. Although in the present embodiment, three holes 34 are disposed at equal intervals on the circumference centered by backrest rotating shaft 7, but are not defined to the spacing in this hole count, hole. This fixing component 33 to install flange part 35 in the way of the beam part of the left and right of substructure member 2, and be fixed on substructure member 2 with the bolt 36 through through hole 72, thus the side of sidewall portion 70 offering porose 34 is configured in the way of falling into the vacancy 62 of the central authorities of substructure member 2. In addition, movable link 32 is made up of the framework 69 of the flute profile of lower opening, in the rear end of the side of sidewall portion 67 of the pair of right and left sagging towards vertical, be provided for hole 63 that backrest rotating shaft 7 runs through and with the pin of the front end more prominent than backrest rotating shaft 7 being located at back support component 4, such as accept the bearing recess 64 that the connecting pin 13 of one end of reaction spring 16 engages. Additionally, on the two side 67 of movable link 32, be respectively formed with a place for making the two ends 37a of stopper element 37 hole 50 passed through. Movable link 32, by making backrest rotating shaft 7 run through the hole 63 of rear end, makes bearing recess 64 against connecting pin 13 simultaneously, and integrated with back support component 4, and is configured to link with back support component 4. The hole 50 of this movable link 32 and the hole 34 of fixing component 33 all form the hole more slightly larger than the thickness of the stopper element 37 of tabular and reduce and rock preferably. Additionally, the stopper element 37 of movable link 32 or drive division 51 and operation line 48 etc. are supported by the top 68 of the framework 69 of the flute profile of movable link 32. Additionally, stopper element 37 is operated by the action bars being configured near seated person etc. via operation line 48.
At this, in locking mechanism 31, there is self-retaining function preferably by inserting spring in mechanism. such as shown in Fig. 9��Figure 16, self-retaining mechanism possesses first spring 44 in the stopper element 37 hole 34 to fixing component 33 side or recess force, the second spring 45 of the action of drive division 51 between stopper element 37 and drive division 51 is transmitted to stopper element 37, when stopper element 37 cannot follow lock out action or the latch-release action of drive division 51, utilize the flexible linkage action separating drive division 51 and stopper element 37 of the second spring 45, absorb the displacement of drive division 51 simultaneously, save as elastic force, when frictional force between that act on stopper element 37 and fixing component 33 reduces, the elastic force stored by the second spring 45 is utilized to make stopper element 37 rotate. in addition, even if the self-retaining function of locking mechanism means the operation by not shown action bars etc. and switch lock-out state in drive system, when stopper element 37 is in the situation not switched, till stopper element 37 becomes rotatable situation, all keep the state of drive division 51. first spring 44 to the second spring 45 is more weak, and has under the effect of the power towards equidirectional effect, the first spring 44 first shorten after second spring shorten strength relationship preferably.
Drive division 51 is constituted by with lower member: the first sliding part 40, and it is rotatably installed on stopper element 37, and directly drives stopper element 37;Second sliding part 41, it can slide along the first sliding part 40; Connection shaft 42, it runs through the first sliding part 40 and the second sliding part 41, and is connected to by the second sliding part 41 and can slide relative to the first sliding part 40; And sliding part 43, it is configured at the face of opposition side, face of configuration the second sliding part 41 of the first sliding part 40, to prevent connection shaft from coming off. Second spring is housed in the guide groove 46 of the central authorities being configured at the first sliding part 41, and it is flexible to be arranged between the end edge of the first sliding part and sliding part 43. Second spring 45, when the action that the second sliding part 41 utilizes operation line 48 draws stopper element 37 towards the direction departing from the hole 34 fixing component 33, is compressed between the sliding part 43 linked via connection shaft 42. And, store the elastic force always stopper element 37 exerted a force towards the direction of exit holes 34. The action of the second sliding part 41 or the action of the first sliding part 40 are transmitted mutually via the second spring 45. Therefore, when the direction rotated towards stopper element 37 is restrained, the constraints such as such as, produced by being subject between fixing component 33 and movable link 32 when the leading section 37a of stopper element 37 embeds hole 34 of fixing component 33 frictional force, or when the front end 37a of the stopper element 37 exerted a force towards the hole 34 of movable link 32 and the position in hole 34 are inconsistent, absorb the addendum modification of the second sliding part 41 with the displacement of the second spring 45.
Additionally, the ball line card that inserts and hook being provided for behaviour's position on the second sliding part 41 determines block 47, and the front end being arranged to be fixed on the line of the line maintenance bracket 49 being fixed on movable link 32 by welding etc. is hooked. The second sliding part 41 and and the line maintenance bracket 49 of movable link 32 one between the first spring 44 is configured to concentric with operation line 48. Therefore, by pulling process line 48, when making the second sliding part 41 close, the first spring 44 is compressed, and stores the power making the second sliding part 41 return to original position.
Being rotated centered by the stopper element rotating shaft 38 being configured at central authorities by stopper element 37, two ends 37a oblique cutting enters the hole 34 of the side of sidewall portion 70 of the left and right of fixing component 33 and is simultaneously embedded in. Thus, compared with the situation that stopper element is inserted in the way of orthogonal with the side of sidewall portion 70 of fixing component, can be smoothly inserted into and reliably engage. And, because engaging with fixing component 33 at the two ends of stopper element 37, so the structural strength of locking mechanism 31 can be made to improve. Therefore, according to circumstances, the thickness when thickness of stopper element 37 also can be made than single-ended support is thin. In addition, owing to stopper element 37 to be installed in movable link 32 side, so with make to arrange multistage hole 34 and in fixing component 33 side of short transverse space required compared with the situation that back support component 4 links, the requisite space that can use to install locking mechanism is little a lot.
The locking mechanism 31 constituted as shown above is separately constructed with substructure member 2 and back support component 4, be formed as the structure that can be respectively arranged in substructure member 2 with back support component 4, as long as so the position that locking mechanism 31 embeds the vacancy 62 of substructure member and the flange 35 of fixing component 33 exists, it is possible to install afterwards. Substructure member 2 simply has the screw hole and vacancy 62 that make bolt 36 pass through, reaction spring 16 is configured between the connecting pin 13 of the front end-plate 20 of substructure member and the spring receiving portion 12 of back support component also merely laterally, substructure member 2 is absent from the structure of complexity, so installing after being prone to.Certainly, also just fixing component 33 can be integrally formed with substructure member at first, and movable link 32 and back support component 4 are integrally formed.
Figure 13 represents non-locking state. Due under this non-locking state, operation line 48 is utilized only to draw the second sliding part 41, simultaneously be in can the state of free earthquake for stopper element 37, so when the first spring 44 is compressed and utilize the front-end edge of guide groove 46 that connection shaft 42 is pushed into the first sliding part 40 by the bounce of the second spring 45, stopper element 37 being held in the state in the hole 34 departing from fixing component 33.
At this, when making operation line 48 be elongated to move to lock-out state, the second sliding part 41 is released to the first sliding part 40 side by the power of the first spring 44, discharges the first spring 44 simultaneously. Now, as shown in figure 13, when the hole 34 of movable link 32 is inconsistent with the position in the hole 34 of fixing component 33, because stopper element 37 cannot rotate, so binder bolt the 39, first sliding part 40 and connection shaft 42 also cannot move. Thus, one side compression the second spring 45, one side the second sliding part 41 advances to the position of the dynamic balance of the second spring 45 and the first spring 44 and stops. In this state, it it is the state compressed of the second spring 45, always apply stopper element 37 to the figure power that above direction of rotation counterclockwise is elastic force-applying via connection shaft 42 (sliding part 43), the first sliding part 40 and binder bolt 39, so keeping the state that the front end 37a of stopper element 37 is pressed in the sidewall of movable link 32. Certainly, in the situation that spring 44 is different with the counteracting force of spring 45, even the situation that one side release 44 1 stopper elements 37 of the first spring cannot rotate, spring 44 also can become the state compressed.
In addition, when utilizing the hypsokinesis of back support component 4 or restoring action and make the position consistency of the hole 34 of movable link 32 and stopper element 37, the power utilizing the second spring 45 and the first spring 44 makes the front end 37a of stopper element 37 embed the hole 34 of movable link 32, becomes lock-out state (with reference to Figure 11 and Figure 12). At this lock-out state, operation line 48 is elongated, second sliding part 41 is tried hard to recommend by the first spring 44, first sliding part 40 is tried hard to recommend by the second spring 45, thereby, the connection shaft 42 of the second sliding part 41 moves to the front-end edge of the guide groove 46 of the first sliding part 40, releases the first sliding part 40 and makes stopper element 37 rotate, so the first spring 44 and the second spring 45 all become the state of elongation.
If to switch to non-locking state from the lock-out state pulling process line 48 of this Figure 11 and Figure 12, then one side compression the first spring 44 one side the second sliding part 41 is drawn. Now, if stopper element 37 be in can the state of free earthquake, then make the first sliding part 40 and stopper element 37 depart from from the hole 34 of fixing component 33 and move to the non-locking state shown in Figure 13 via the second spring 45. ; in the situation that stopper element 37 is restrained in the direction to rotate; such as embed the state in hole 34 of fixing component 33 at the leading section 37a of stopper element 37 by the situation of the constraints such as produced frictional force between fixing component 33 and movable link 32; the addendum modification of the second sliding part 41 is absorbed with the displacement of the second spring 45; and the first sliding part 40 and stopper element 37 are still held in original state, the second spring 45 is compressed (with reference to Figure 14). Under this state, although operation line 48 switches to non-locking state, but persistently to applying, from the stopper element 37 of the state that the hole 34 of movable link 32 departs from, the elastic force that only disengages it from.Therefore, because of when back support component 4 occurs certain action to make above-mentioned frictional force etc. reduce, Li Likela first sliding part 40 of available second spring 45 and stopper element 37, stopper element 37 departs from from the hole 34 of fixing component 33, and moves to the non-locking state shown in Figure 13.
As locking mechanism 31, it is not defined to the mechanism shown in Fig. 9��Figure 16. Such as, as shown in FIG. 17 and 18, even the locking mechanism that the first spring 44 and the second spring 45 are configured at opposition side across stopper element 37 also can be implemented. First spring 44 is made up of twist coil spring, and it is configured to concentric with the stopper element rotating shaft 38 of the center of rotation becoming stopper element 37, the edge of stopper element 37 is hooked in one end, simultaneously the other end hooks the hole 57 at the top of movable link 32, and is arranged to always by the stopper element 37 hole 34 towards fixing component 33 side or recess force.
On the other hand, the drive division 51 comprising the second spring 45 is constituted by with lower member: the second sliding part 41 ', and it only engages in the direction of rotation of stopper element 37 via the connecting pin 39 embedding the elongated hole 56 being arranged at stopper element 37; First sliding part 40 ', it can drive towards the direction identical with the second sliding part 41 ' at fore-and-aft direction; Swing arm 53, it utilizes operation line 48 to drive the first sliding part 40 ' at fore-and-aft direction; And guide 55, the second sliding part 41 ' is supported into and can move before and after stopper element 37 by it. Second sliding part 41 ' constitutes the basket shape housing the second spring 45, is arranged to slip into simultaneously and has below the stopper element 37 of connecting pin 39 in front end, and web highlights. The latter half of bottom of this second sliding part 41 ' is open, and the first sliding part 40 ' is inserted into before and after inner side energy dynamic, to push away the second spring 45. Additionally, stroke end when the second sliding part 41 ' retreats is restricted because abutting with the edge of guide 55. Guide 55 is open in order to the second sliding part 41 ' to support into the face that towards the propalinal component of stopper element 37, can be only oriented to stopper element 37 side, and marks off the space of three besieged channel-shaped of surrounding. Guide 55 arranges projection 65 a side of left and right sidewall, possesses bracket 66 at the sidewall of the opposing party simultaneously, above-mentioned projection 65 is embedded the hole of the sidewall being arranged at movable link 32, bracket 66 is tightened in the end face of movable link 32 simultaneously, is thereby fixed on movable link 32. Swing arm 53 will insert dead eye 54 from the protuberance 52 that the left and right sidewall of guide 55 is prominent respectively, and is supported for swingable. Additionally, be provided with line card in the front of swing arm 53 to determine block 47, the ball of front end of the line 48 of the line maintenance bracket 49 being fixed on guide 55 to be formed is hooked.
This locking mechanism 31 utilizes first spring the 44, second spring 45 to realize self-retaining function, wherein, stopper element 37 is always exerted a force by the first spring 44 towards the hole 34 of fixing component 33 side, make it restore and embed, second spring 45 is configured at and stopper element 37 carries out between the second sliding part 41 ' and the second sliding part 41 ' driven by operation line 48 linked, and transmits the action of the first sliding part 40 ' to the second sliding part 41 '. Additionally, the first spring 44 to the second spring 45 is more weak, and have under the effect of the power towards equidirectional effect, the first spring 44 first shorten after second spring shorten strength relationship preferably.
According to this locking mechanism 31, the latch-release state that stopper element 37 rotates towards the direction that turns clockwise and departs from from the hole 34 of fixing component 33 is the state that the second sliding part 41 ' moves to Figure 18 upper left side together with stopper element 37, and is the state that is twisted of the first spring 44.Now, the first sliding part 40 ' and swing arm 53 be in operation line 48 drawn and on Figure 17 the state of direction of rotation counterclockwise rotation. Therefore, in order to switch to lock-out state, when making operation line elongation (liberation), swing arm 53 and the first sliding part 40 ' are just liberated, thus utilizing the power of the first spring 44 to make stopper element 37 rotate towards direction of rotation counterclockwise, the second sliding part 41 ' and the first sliding part 40 ' are also pushed back the state of Figure 17 simultaneously. Now, if the position of movable link 32 is not consistent with the position in the hole 34 of fixing component 33, then the both ends 37a of stopper element 37 abuts with the two side of fixing component 33, stopper element 37 becomes the state that cannot rotate, and the front end 37a of stopper element 37 is kept when being crushed on the sidewall of movable link 32. ; when utilizing the hypsokinesis of back support component 4 or restoring action and make the position consistency of the hole 34 of movable link 32 and stopper element 37; utilizing the power of the first spring 44, stopper element 37 rotates towards direction of rotation counterclockwise, and switches to the lock-out state in the hole 34 embedding movable link 32. Meanwhile, pin 39 the second sliding part 41 ' linked and the first sliding part 40 ' also return to the position of Figure 17.
When switching to latch-release state from this lock-out state pulling process line 48, in fig. 17, swing arm 53 rotates towards direction of rotation counterclockwise, makes the first sliding part 40 ' advance, and is exerted a force towards the direction of compression by the second spring 45. Now, if stopper element 37 is in the state that can freely move, then pushes away the second sliding part 41 ' and stopper element 37 via the second spring 45, depart from from the hole 34 of fixing component 33, and switch to latch-release state. ; the state in hole 34 of fixing component 33 is embedded by the situation of the constraints such as produced frictional force between fixing component 33 and movable link 32 at the leading section 37a of stopper element 37; the addendum modification of the first sliding part 40 ' is absorbed with the displacement of the second spring 45; and the second sliding part 41 ' is still held in original state with stopper element 37, the second spring 45 is compressed. In addition, because of when back support component 4 occurs certain action to make above-mentioned frictional force reduce, the power utilizing the second spring 45 releases the second sliding part 41 ' and stopper element 37 at once from the hole 34 of fixing component 33, thus switching to latch-release state, first spring 44 is twisted simultaneously, and stores the elastic force in order to stopper element 37 to switch to lock-out state.
Additionally, above-mentioned embodiment is the preferred embodiments of the present invention, but it is not defined in this, various deformation can implemented without departing from the scope of the purport of the present invention. such as, in present embodiment, as body weight corresponding counter-force mechanism, mainly illustrate, with connecting rod 10, the front of seat supports component 6 is connected to the example that can lift relative to substructure member 2, but it is not particularly limited in this, certainly the situation of body weight corresponding counter-force mechanism as disclosed in JP 2008-212622 it is equally applicable for, this body weight corresponding counter-force mechanism adopts and makes the front of seat supports component associate with the hypsokinesis of back support component with the axle of the seat supports component of the elongated hole with movement in elongated hole that are formed at substructure member side, and by structure that it lifts to oblique back upper place. certainly, in order to the elongated hole that the front of seat supports component is lifted not to be defined to the elongated hole of straight line, also may make up circular arc.
Although additionally, the back support component 4 mainly illustrated in present embodiment by by the way of substructure member 2 to the left and right two levers of branch constituted, but be not particularly limited in this, also by a lever arrangement in central back support component.
(symbol description)
1 lower limb
2 substructure members
4 back support components
6 seat supports components
7 backrest rotating shafts
16 reaction springs
21 screws that front end is sphere constituting reaction spring apparatus for adjusting position
31 locking mechanisms
32 movable links
33 fixing components
34 holes
37 stopper elements
38 stopper element rotating shafts
44 first springs
45 second springs
51 drive divisions
Claims (7)
1. a backrest counter-force mechanism for chair, has:
Substructure member, this substructure member is supported by lower limb;
Back support component, this back support component connects to energy hypsokinesis via backrest rotating shaft and substructure member, and supports backrest;
Seat supports component, this seat supports component is provided with seat; And
Reaction spring, this reaction spring applies the elastic force making body weight corresponding counter-force mechanism and described back support component return to original position, described body weight corresponding counter-force mechanism makes described seat supports component carry out linkage action towards lifting direction when making described back support component hypsokinesis
It is characterized in that,
Described reaction spring is laterally configured between described back support component and described substructure member, the front of described seat supports component is connected to and can rotate freely relative to described substructure member via connecting rod by described body weight corresponding counter-force mechanism, the rear of described seat supports component is connected to the lever connecting rod portion more extended to oblique front upper place than described backrest rotating shaft simultaneously and rotate freely, the described connecting rod that the front of described seat supports component is supported tilts forward than described lever connecting rod portion, utilize the hypsokinesis action centered by described backrest rotating shaft, the described lever connecting rod portion making the front of described back support component rotates, thus to oblique back upper place to the rear lifting described seat supports component, and the described connecting rod that the front of one side pull-up and described seat supports component links, one side lifts the front of described seat supports component.
2. the backrest counter-force mechanism of chair as claimed in claim 1, it is characterised in that
Described reaction spring is configured at the position more closer to the front than described backrest rotating shaft.
3. the backrest counter-force mechanism of chair as claimed in claim 1, it is characterised in that
Described reaction spring is configured at the position more more rearward than described backrest rotating shaft, and one end is rotatably installed on described back support component, and the other end is rotatably installed on described substructure member, and changes it together with the action of described back support component.
4. the backrest counter-force mechanism of chair as claimed in claim 1, it is characterised in that
As described reaction spring, use collapse coil spring, and possess reaction spring apparatus for adjusting position, described reaction spring axle is supported into and can rotate freely in the end of either one that described collapse coil spring is installed on described back support component or described substructure member by this reaction spring apparatus for adjusting position, and apply the displacement of the length direction composition of described reaction spring, thus regulating the initial compression amount of described reaction spring.
5. a backrest counter-force mechanism for chair, has:
Substructure member, this substructure member is supported by lower limb;
Back support component, this back support component connects to energy hypsokinesis via backrest rotating shaft and substructure member, and supports backrest;
Seat supports component, this seat supports component is provided with seat; And
Reaction spring, this reaction spring applies the elastic force making body weight corresponding counter-force mechanism and described back support component return to original position, described body weight corresponding counter-force mechanism makes described seat supports component carry out linkage action towards lifting direction when making described back support component hypsokinesis
It is characterized in that,
Described reaction spring is laterally configured between described back support component and described substructure member,
In addition, the backrest counter-force mechanism of described chair includes the locking mechanism being mutually clamped between described substructure member and described back support component, this locking mechanism is made up of the fixing component being installed on described substructure member side and the movable link being installed on described back support member side, the stopper element being provided with rotation and two ends and described fixing bar-crossing centered by stopper element rotating shaft in described movable link side and the drive division making this stopper element rotate, in the direction of rotation of described back support component, hole or the recess of the both ends embedding of the described stopper element of multistage confession it is provided with in described fixing member side.
6. the backrest counter-force mechanism of chair as claimed in claim 5, it is characterised in that
Described locking mechanism includes first spring in the described stopper element hole to described fixing member side or recess force, it is located between described stopper element and described drive division and transmits second spring of action of described drive division to described stopper element, when described stopper element cannot follow lock out action or the latch-release action of described drive division, utilize the flexible linkage action separating described drive division and described stopper element of described second spring, absorb the displacement of described drive division, and store as elastic force, when frictional force between that act on described stopper element and described fixing component reduces, the elastic force stored by described second spring is utilized to make described stopper element rotate.
7. a chair, is provided with the backrest counter-force mechanism described in claim 1 or 5.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2010/003517 WO2011148414A1 (en) | 2010-05-26 | 2010-05-26 | Counterforce mechanism for backrest of chair and chair incorporating the said |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102905579A CN102905579A (en) | 2013-01-30 |
| CN102905579B true CN102905579B (en) | 2016-06-08 |
Family
ID=45003426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080066974.XA Active CN102905579B (en) | 2010-05-26 | 2010-05-26 | The backrest counter-force mechanism of chair and be provided with the chair of this mechanism |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8998322B2 (en) |
| EP (1) | EP2578113B1 (en) |
| JP (1) | JP5643819B2 (en) |
| CN (1) | CN102905579B (en) |
| AU (1) | AU2010354307B2 (en) |
| TW (1) | TWI556773B (en) |
| WO (1) | WO2011148414A1 (en) |
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- 2010-05-26 WO PCT/JP2010/003517 patent/WO2011148414A1/en active Application Filing
- 2010-05-26 CN CN201080066974.XA patent/CN102905579B/en active Active
- 2010-05-26 US US13/698,104 patent/US8998322B2/en active Active
- 2010-05-26 AU AU2010354307A patent/AU2010354307B2/en active Active
- 2010-05-26 JP JP2012516989A patent/JP5643819B2/en active Active
- 2010-05-26 EP EP10852087.5A patent/EP2578113B1/en active Active
- 2010-09-17 TW TW099131591A patent/TWI556773B/en active
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| CN101636296A (en) * | 2007-03-16 | 2010-01-27 | 丰田纺织株式会社 | Blocking device |
Also Published As
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|---|---|
| AU2010354307A1 (en) | 2012-12-20 |
| WO2011148414A1 (en) | 2011-12-01 |
| US20130057037A1 (en) | 2013-03-07 |
| TWI556773B (en) | 2016-11-11 |
| EP2578113B1 (en) | 2014-11-26 |
| EP2578113A4 (en) | 2013-11-06 |
| EP2578113A1 (en) | 2013-04-10 |
| CN102905579A (en) | 2013-01-30 |
| JP5643819B2 (en) | 2014-12-17 |
| US8998322B2 (en) | 2015-04-07 |
| JPWO2011148414A1 (en) | 2013-07-22 |
| TW201141423A (en) | 2011-12-01 |
| AU2010354307B2 (en) | 2014-10-02 |
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